Jam

The answer

Opened jam lasts 6–12 months in the fridge.

Caution Refrigerate after opening. Sugar slows spoilage but does not stop mold.

How long it keeps

Fridge (40°F) 6–12 months safe window
Freezer (0°F) Do not freeze best quality
Room temp 2 hours max then discard
Discard Discard if moldy, fermented-smelling, or fizzing.

By state & packaging

State Fridge Freezer
Opened, refrigerated 6–12 months Do not freeze
Unopened, pantry

Signs it has gone bad

Mold at the cap or surface
Fermented or off smell
Separation with sour odor

FAQ

How long does opened jam last?

About 6–12 months refrigerated per FoodKeeper guidance. Follow the package date if it is shorter.